Stopwatch & Timer
NEWUse a precision stopwatch with lap tracking or set a countdown timer — all in your browser with no downloads needed.
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Stopwatch
| Lap | Lap Time | Total |
|---|
No laps recorded
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How to use Stopwatch & Timer
- Choose Stopwatch or Timer mode.
- For stopwatch: click Start, then Lap to record splits.
- For timer: set the duration and click Start.
- Use Reset to clear and start over.
What is Stopwatch & Timer?
This tool provides two timing modes: a stopwatch that counts up with lap tracking, and a countdown timer that alerts when time runs out. Both offer millisecond precision.
The stopwatch records lap times so you can track intervals. The countdown timer plays an audible alert when it reaches zero.
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FAQ
- How accurate is the stopwatch?
- The stopwatch uses performance.now() for sub-millisecond precision. Display shows centiseconds (hundredths of a second).
- Does the timer work if I switch tabs?
- Yes — the timer continues running even if you switch browser tabs. It uses the page's background timing to stay accurate.
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